Circuit closer



Jan. 8 1924.

J. c. OLSEN cmcun cnosaa Original Filed April 7. 1920 ll'lllllllll lu INVENTOR John (3.013211.

wlmissas 3&

" 44%,, 9:5 monnsrs Patented Jan. 8, 1924.

JOHN CHBISOLSEN, OJ? MINNEAPOLIS, MINNESOTA; SINEV C.

or sun roam .cHRIsoLsaN, DECEASED.

QIBIC UIT CI QSER.

A es fi e April 9% To al whe i m y 07 m Be it known that I, JO N vCums .OLSEN, a citizen of the United States,and a resident of Minneapolis, in the county of Hennepin and State ,of Minnesota, have inventedcertain new and usefullmprovemen ts in Circuit Closers, ,of which the following is a specification.

This invention relates to circuit closers and the object of the invention is to provide a device ,of this character having novel means whereby a circuit is closed when the temperature drops below a predetermined point or in the event of a fire in the imrneediate vicinity of the device.

In the drawings: I F igqlre 1 is a diagrammatic view showing the devicein use as a burglar alarm,

Figure '2 is aside view with parts brolgen away of the weight and its supports,

Figure 3 is a side View showing the ,de-

V ce in use as a frost alarm,

' Figure 4 is a section on the line {t et of F1 .e a

igure 5 is a rear view of the ,hase,

Figure ,6 is a perspective view of the restraining means adapted to be released by heat.

The improved switch which is adapted to be interposed in a normally open electrical circuit having an alarm for closing the said circuit to actuate the alarm, comprises a base 1, to which is hinged a switch arm 2 which may be of any usual or desired construction, the said arm being hinged at 3 to the base. This switch is adapted to close between contact members 4 on the base, to close the circuit, as indicated in broken lines in Figures 1 and 3, and the switch arm is operated by the usual handle 5.

The base 1 is adapted to be secured to a suitable fixed support by screws 6 which are passed through openings in the base, and at that end adjacent to the hinged connection of the switch arm, a plate 7 is secured to the base. This plate at the base is provided with webs or flanges 8 which lap upon the opposite sides of the base. 7

A substantially U-shaped arm 9 is hinged to the flanges 8, the arm having at each end an eye 10 which engages one end of a headed pin 11 supported by the webs or flanges 8. A coil spring 12 encircles the pin 11 between the flanges, and one end of u this spring indicated at 13, bears against .tcrial to be the arm 9, and acts norm plate 7 has a s OLSEN ADMINISTRATRIX Serial No.,87 1 863. Renewed September 28, 1823.

ally to press said The other engages the base 1. "The 0t 01' opening 14 near its upper end for receiving the outwardly curved portion 15 of a holderconsisting of a body 16 and arms 17 extending from the ends thereof. Support for the The portion 15 The plate 7 constitutes a vial holder.

w ed am he slo 14 and on the opposite face of the plate 7 from the body of the holder, is adapted to receive a plug or bar device is use QOQif fusible maresentl described, when the as a re alarm.

Ego-h arm 17 of the holder has an in- W?! 1;; xten ing" 8 8 and at its free end,

the said lugs are vnotched to receive a bottle or other glasscontainer 19 for holduse as a frost alarm.

4. s te he he d vic s i ende f When the device is used as a burglar alarm, the mechanism shown in Figures 1 and 2 is used.

. h said mechanism comprises a weight 21, which has at its upper ell-.1 a n ta or ir b t 2 and t earne remote from the rabbet is rounded as shown. This weight has an opening 23 extending therethrough, and this opening is adapted to be engaged by a pin or the like, as for instance, a nail 24 which is driven into the casing 25 of a door in convenient position to be engaged by the weight.

To the door there is connected an arm 26 which rests in the rabbet of the weight,

when the door is closed.

A flexible member 27 is connected with the switch arm at one end and with the weight flexible member having through the opening 23, member passes over a nail into the casing of the door,

guide the flexible member.

at the other, the a loop passing and the flexible or the like driven to properly In operation as a burglar alarm, the parts are arranged as shown in the weight being placed the bar 26 resting in the rabbet.

Figures 1 and 2, on the nail, with It will be evident that when the door is pushed open, the weight will be dislodged from the nail,

and will throw down the switch arm.

When the device is usedas a frost alarm,

the parts are arranged as shown in Figures 3 and 4, the bottle 19 containing water being placed in the notches of with the spring arm 9 b the lugs 18, and etween the bottle and the body of the holder. When now the water in the bottle freezes the bottle will burst, and the arm 9 will be released. The arm 9 will strike the switch arm and will throw the same down into the broken line position of Figure 3, closing the circuit.

When the device is used as a fire alarm, the plug 20 of parafline and wax is placed in the curved portion 15 of the holder between the said curved portion and the plate 7. The bottle 19 is also placed as shown in Figure 3. l/Vhen now the plug fuses the arm 9 will be released, and will close the switch arm.

Referring to Figure 3, it will be seen that the curved portion 15 of the holder has a catch 30 which is connected to the curved portion of the holder by a drop of solder indicated at 29, the said solder being fusible at a predeterminedtemperature. This solder is an alternative construction taking the place of the plugs 20. Normally this catch 30 locks the holder to the element 7. When the device is used as a fire alarm, the solder will fuse at a predetermined temperature, releasing the holder which will close the circuit. The device can also be used as a fire alarm by locking the holder to the plate with the latch thirty (30), as shown in Fig ure three (3). When now the solder at 29 fuses the arm 9 will be released, and will close the switch arm.

I claim 1. A device of the class described, comprising a support having an opening, a holder having a looped portion passed through said opening, a fusible element engaging said looped portion, a liquid con taining vial carried by said holder, and a spring actuated arm engaging said vial. and held in a retracted position thereby.

2. A device of the class described com prising a support, a holder associated with the support, a fusible element connecting said holder to said support, a liquid containing vial carried by said holder, and a spring actuated arm engaging the said vial at a point spaced from its ends and normally held in a retracted position by said vial.

3. A device of the class described conr prising a member having its intermediate portion formed with a substantially semicircular loop, a support receiving said loop, a fusible element passing through said loop and engaged with said support whereby to connect the member to the support, and a spring actuated arm pivoted to said support, there being means establishing a connection between said arm and said member, said means consisting a a breakable vial connected at its ends to said member and having its intermediate portion engaged by said arm.

1. A device of the class described compris ing a holder having inwardly directed end portions, a breakable vial connected to said end portions, a spring actuated member engaged with said breakable vial and normally held in a retracted position thereby, and fusible means normally retaining said holder in a retracted position.

JOHN CHRIS OLSEN. 

